Potato masher



FIG. 1 is a front, top, right side perspective view of a potato masher showing my new design;

FIG. 2 is a rear, bottom, left side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof, the right side elevation view being a mirror image of the left side elevation view;

FIG. 6 is an enlarged top plan view thereof; and,

FIG. 7 is an enlarged bottom plan view thereof. 

CLAIM The ornamental design for a potato masher, as shown and described. 